Instrument Petting Zoo. 2 p.m. at Ashburn Library, 43316 Hay Road. Children ages 6 and up can enjoy seeing instruments up close and then hearing a concert by the Loudoun Symphony Orchestra. Free. Visit library.loudoun.org for more.

Craft and Storytime. 2 p.m. at Sterling Library, 120 Enterprise St. Children can enjoy activities celebrating moms. Free. Register at library.loudoun.org or 703-430-9500.

Dive into Reading. 4 p.m. at Cascades Library, 21030 Whitfield Place, Potomac Falls. Children 3-7 can create a masterpiece on the sidewalk. Free. Register at library.loudoun.gov or 703-444-3228.

Me & My World: Go Fly a Kite. 4 p.m. at Sterling Library, 120 Enterprise St. Children 4-7 can learn about Benjamin Franklin and then make a kite to take home. Free. Registration required, library.loudoun.gov or 703-430-9500.

Wednesday/May 13

Book Club. 4 p.m. at Ashburn Library, 43316 Hay Road. Children discuss a book each week. Visit library.loudoun.gov or 703-737-8100 for titles.

Music Performance. 8 p.m. at Stone Bridge High School. The Loudoun Symphony performs. $18/door; $15/advance. Free for youth. Visit www.loudounsymphony.org for information on the special guests. 703-771-8287.

Music Performance. 3 p.m. at Franklin Park Arts Center. The U.S. Army Blues performs a free concert. Visit www.franklinparkartscenter.org or 540-338-7973.

Music Performance. 3 p.m. at Dominion High School. The Loudoun Symphony performs. . $18/door; $15/advance. Free for youth. Visit www.loudounsymphony.org for information on the special guests. 703-771-8287.